Coin-controlled weighing mechanism



Oct. 12 1926.

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Oct. 12 1926.

F. R. ANDERSON com CONTROLLED WEIGHING NEGHANISM Filed Dec. 14, 1923 5 Sheets-Sheet 5 Ummm Patented Oct. 12, 1926.

UNITED STATES renee?.

PATENT OFFICE.

FREDERICK R. ANDERSON, OF MINNEAPOLIS, MINNESOTA., ASSIGNOR TO NATIONAL NOVELTY COMPANY, OF MINNEAPOLIS, MINNESOTA, A CORPORATION OF MINNE- BOTA.

COIN-CONTROLLED WEIGHING MECHANISM.

Application filed December 14` 1923. Serial No. 680,632.

My invention relates to improvements in coin controlled weighing machines and scales. and exists particularly in improvements in the weighingr mechanism to insure reliability and efficiency with simplicity ot operatingr parts. The coin controlled features of the present invention are embodied in a separate application, Serial Number 539.950, tiled February 28. 1922.

hly invention consists in the features of construction and combination hereinafter partdcularly described and claimed.

In the drawings:-

Figure 1, is a front elevation of a weigrhingr machine embodying my features of invention.

Figure 2. is a vertical section on line 1-1 of Figure 1.

Figure 3. is an enlarged view on line of Figure 2. with some parts removed and some parts broken away, and with the operating parts in position holding the indicatin;r arrow at zero.

Figure 4. is a similar view to Figure 3 with the movable parts in weighing position.

Figure is a Vertical section. taken on' line 5-5 ot Figure 4, with some parts shown broken away.

Figure'ti, is a cross section on line 6-6 of Fimire 5; and

Figure 7. is a similar view to Figures 3 and 4. with the movable parts partly returned to normal position.`

Referringv to the drawings. A represents a hollow base of usual Jform. from the rear ot which rises the hollow vertical column 2. supportingr at its upper end the hollow head 3. the rear of the head being closed by` a plate 4. and the front ot the head beiner closed by the ordinary dial 5. The hase column and head may be connected together as by a tie-pipe 6. extending centrally7 through the column and secured to the base and head as by nuts 7 and 8.

Supported upon the base is the usual weighing.r platform 9. yieldingly upheld through lever mechanism B, supported in connection with lugs 10 depending from the weighing platform. Said lever mechanism at its lower end 'has bearing support upon a rod 11 passingr upwardly through the tiepipe 6 within the column, the rod 11 at its upper end being connected through the mediun'i of a cross bar 12 with coil springs 13- secured to a bracket 14 supported by the weighing machine head. rThe leverage construction supportingy the Weinhi platform being of usual type and not being claimed as a part of the present invention7 is not specifically set forth and described.

My invention resides in the Yfollowing described coin controlled mechanism:

Secured at the rear of the dial plate is a plate 15 supporting the operatirer parts. and centrally journaled in the plate 15 is a shaft 16, supporting at its outer end an indicatingf hand 17 to cooperate with the dial numbers 18 upon the dial plate. Carried by the inner end ot the shaft 16 is a pinion 19. which meshes with teeth 20 and 21 upon the inner edges of the vertically disposed rack bars 22 and 23. The rack bars 22 and 23 are slidablv supported between anti-friction rollers 24. The rack bar 23 is longer and heavier than the rack bar 22. so as to act as a counterwei 4rrht for the bar 22 in restoringr the same to normal position. as hereinafter set forth.

An adjustable stop 25 tor the raclr bar 2S is supported upon the frame work below said bar. Slidably supported behind the rack bar 22. between the anti-friction rollers. is a bar 26. the bar 26 supportinq at its lower end a weight 27 adapted., in the operation of the machine. to rest upon a luer 28. adjustablv supported upon the tension rod 11. Carried by the har 26 above the raclr bar 22 is a pin 29 adapted to engage with the upper end of the rack bar 22. as hereinafter set forth.

The weighted bar 26 is formed upon its outer edge with ratchet teeth 30 to be eny.frafred by the tooth. of the pawl 31 in the operation ot the machine. The pawl 31 has fulcrum support 32 upon a cam lever which cam lever has ulcrum support 34 upon the plate 15. The .coil sprinir counects the outer end o't' the pawl B1 with an upwardly eytendine` finger portion upon the inner side of the cam lever to control the action oi the pawl. a rest on lever serving to support the inactive end of' the pawl in its normal position.

Platin.;` fulcruin support 3T upon the plate 1:- adjacent to the cam lever is a trio u 'i 7 w nl db. adapted to extend over the pavvl o1,

as shown in Figure 3. 'Ihre trip has spring connection ivith the cani lever 33 through e medium ot a coil spring- 39 connectthe 'lovriiivardly projecting` end of rain ivitii the doi-,vnvvardly projecting tin'iei- -l-t, carried by the trip. Prolly from the trip is a trip lever normally held raised by a coil spring connecting the trip lever with a lever aim lil, harina' adjustable support upon the plate l5, The outer end of the i lever stands below the outlet end o't a coin clin' the inlet end -1-,5 of the coin chute lie' i ie tace oil the machine head. f way for the rack bars upon ate l5. I ilirovide a second ipon the tace ot the plate bjr screivs and spaced therefrom to torni a housing' Vtor the interposed parts.

Y order to keep the tooth ot the paivl 31 ill ll Jun am od ot a ectingi outrfair 1 J. s. r orare +G scenici in troni meshingT too deeply with the teeth 3() ot Athe rack bar 26, l jn'ovide the finger 48, secured behind the plate 46 and projecting upwardly between the tulcrum support ot the pau'l and the ratchet teeth 30.

rEhe aboye described mechanism is actuated in the following manner:

in rigure 3, the parts are shovvn in normal. non-rreighme` position, with the iveifrhte-'l lever 2G locked in raised position tliroiioh the medium oi, the pawl 31. In this p` tion o'i the parts. it the Weiglxt is placed upon the scale plat'loi'm loweringy the tension rod 11, the indicating" hand v-ill remain at zero by reason ot the 'tact that the ba 2G remains lul-:ed in raised position by pawl 31, and the engaging` trip 8S, the

22 remaining in raised position through counter-balancing influence of the heavier bar 23. holding the pinion 19 and the supported indicator immovable. It, however, with the tension rod 11 loivered through the effect ot' a iveiaht upon the plat-- iorin. a coin is dropped through the chute the following); operation nill take place: e coin is dropped tl'irough the chute ril-:es the outer end of the lever Litl. Weie'ht swings said lever down-- d ,n its .inni and against the tension `i f2 to allow the coin to pass b v the lei-:er itl, carrying the trip 3S out ot locking engagement with the paii'l 31. The releasing' of the paivl 31 permits the rack hay to drop. through the influence of the weight into the position shown in Figure l. vvith the iveight coming to rest upon the stop 2S carried by the tension rod. As Yhe rack bar 2G drops. the pin 29. engagivith the top or the bai' carries that downwardly, turning the pinion 19 to rai-ry the indicating hand into the dotted t li e b a r the oft the sn line position shown in Figure et, which registers on the dial the weight ot the object .pon the sk ale. This turning ol the pinion raises the counter-bahince bar into the position shown in Figure 4:. As soon'as the weight removed trom the Weighing platform, the springs 13 will restore the tension rod to the normal position shown in TEmpire 3, raising the Weighted bar 2G, the paivl then being' forced into locking position with the raised bar 26 and the trip into locking;` engagement with the pawl through the influence ot the controlling spi-ii'igs 35, B9. and 42.

Figure T shows the position of' the parts just as the bar 2G is reaching4 this restored position and before the indicator controlling bars and 2? have reached their normal position. The restoring of the parts 'to the position shown in Figure 3, as will be seen in the drawing, carries the pin 29 out ot' engagement with the rack bar 22, permittingr the pinion 19 to be turned through the iveip'ht of the descending bar 23, to raise the bar 22 into the normal position shown in Figure The subject matter of this application is an improvement on a copending application, the subject matteiI of which I am the inventor.

I claim 1. A Weighing mechanism including a resiliently-supported, load-actuated member, a traine plate, a rack bar slidable on the plate and adapted to be actuated by the member, a second rack bar also slidable on the plate and heavier than the Iii-st bar, a pinion connecting the tivo bars, said second bar operating to return the lirst bar to normal position, and an adjustable stop engaging the loiver end of the second bar, for supportingr the same in normal position.

2. A Weighing mechanism including a resiliently-supported, load-actuated member, a 'trame plate, a rack bar slidable on the plate and adapted to be actuated by the member, a second rack bar also slidable on the plate and heavier than the first bar, a pinion connecting,y the two bars. said second bar operating' to return the first bar to normal position, a third bar slidable lengthivise of the ii'st bar and having an abutmentextending into the path thereof to en ago and slide the same away from normal position, said first bar being .tree to more when not engaged by the abutment, and means urging the third bar into opel'- atire relation to said load-actuated member to be actuated thereby.

3. A Weighing mechanism including a resiliently-supported, load-actuated member, a frame plate, a rack bar slidable on the plate and adapted to lie-actuated by the member, a second rack bar also slidable on the plate and heavier than the first bar, a pinion connecting the two bars, said second bar operating to return the first bar to normal position, a third bar slidable lengthwise ot' the first bar and having an abutment extending into the path thereof to engage and slide the same away from normal position, said first bar being free to move when not engaged by the abutment, a lug carrier by the load-actuated member, and a weight on the lower end of the third bar normally resting on the lug and oonstituting an operative connection between the load-actuated member and said third bar.

In testimony whereof I affx my signature.

FREDERICK R. ANDERSON. 

